The hex color #660e02 is a dark color. The web-safe version is Hex
#660000. A complementary color is
#99F1FD. The grayscale version is
#272727. A 20% lighter version of the original color is
#994135, and Hex
#330000 is the 20% darker color. If the color is saturated by 10%, you get
#6C0B00. If the color is desaturated by 10%, the color
#601106 is obtained.